Summer lips dry cracked skin, may be contact dermatitis, dry skin, malnutrition and other reasons. 1. Contact dermatitis: For example, contact with allergy-inducing substances in the summer causes contact dermatitis of the local skin and mucous membranes, which can easily lead to dry, cracked and peeling lips. 2. Dry skin: summer high temperature sweating, the body does not replenish water in a timely manner, the outside air is dry, can also cause summer cracked lips peeling. 3. Malnutrition: malnutrition caused by anemia, lack of vitamins, lack of trace elements, etc., may also lead to chapped lips in summer. There may be other reasons for dry and cracked lips in summer, and you need to go to the hospital first to get a clear picture of the cause of the problem.